Josephine F. W. Baggen, Pieter van Dokkum, Gabriel Brammer, Anna de Graaff et al.
Abstract Early JWST studies found an apparent population of massive, compact galaxies at redshifts z ≳ 7. Recently three of these galaxies were shown to have prominent Balmer breaks, demonstrating that their light at λ rest ∼ 3500 Å is dominated by a stellar population that is relatively old (∼200 M...
Ashraf Dewan, Emmanuel T. Ongee, M. Rafiuddin, Md. Masudur Rahman et al.
ABSTRACT Satellite‐derived lightning data for 17 years (1998–2014) were used to evaluate the relation between environmental factors and lightning activity over the Bangladesh landmass. Time series convective available potential energy (CAPE) data were extracted from ERA‐40 reanalysis data while tota...
Mohammad Hassan Murad
Piyali Bhar, Mohammad Hassan Murad, Neeraj Pant
C. Inserra, Mattia Bulla, Stuart Sim, S. J. Smartt
ABSTRACT We present the first spectropolarimetric observations of a hydrogen-free superluminous supernova (SLSN) at z = 0.1136, namely SN 2015bn. The transient shows significant polarization at both of the observed epochs: one 24 days before maximum light in the rest-frame, and the other at 27 days ...
F. Faedi, R. G. West, M. R. Burleigh, M. R. Goad et al.
We have performed extensive simulations to explore the possibility of detecting eclipses and transits of close, substellar and planetary companions to white dwarfs in WASP (the UK Wide-Angle Search for Planets) light curves. Our simulations cover companions 0.3 < R pl < 12 R and orbital periods 2 < ...
M. Fraser, K. Takáts, A. Pastorello, S. J. Smartt et al.
We report the identification of a source coincident with SN 2009kr in HST pre-explosion images. The object appears to be a single point source with an intrinsic colour V-I = 1.1 and M_V = -7.6. If this is a single star it would be a yellow supergiant of log L/L_{sol} \sim 5.1 and a mass of 15 (+5/-4...
D. R. Anderson, M. Gillon, C. Hellier, P. F. L. Maxted et al.
Abstract We report the discovery of WASP-5b, a Jupiter-mass planet orbiting a 12th-mag G-type star in the Southern hemisphere. The 1.6-d orbital period places WASP-5b in the class of very hot Jupiters and leads to a predicted equilibrium temperature of 1750 K. WASP-5b is the densest of any known Jov...
M. Fraser, Justyn R. Maund, S. J. Smartt, M. T. Botticella et al.
Core-collapse supernovae (SNe) are the spectacular finale to massive stellar evolution. In this Letter, we identify a progenitor for the nearby core-collapse SN 2012aw in both ground-based near-infrared and space-based optical pre-explosion imaging. The SN itself appears to be a normal Type II Plate...
C. Inserra, S. J. Smartt
We investigate the use of type Ic superluminous supernovae (SLSN Ic) as standardizable candles and distance indicators. Their appeal as cosmological probes stems from their remarkable peak luminosities, hot blackbody temperatures, and bright rest-frame ultraviolet emission. We present a sample of 16...
Ksh. Newton Singh, Mohammad Hassan Murad, Neeraj Pant
K. A. Alsubai, N. Parley, D. M. Bramich, R. G. West et al.
We report the discovery and initial characterisation of Qatar-1b, a hot Jupiter orbiting a metal-rich K dwarf star, the first planet discovered by the Alsubai Project exoplanet transit survey. We describe the strategy used to select candidate transiting planets from photometry generated by the Alsub...
Bingjie Wang, Anna de Graaff, R. L. Davies, Jenny E. Greene et al.
Abstract The JWST discovery of “little red dots” (LRDs) is reshaping our picture of the early Universe, yet the physical mechanisms driving their compact size and UV-optical colors remain elusive. Here, we report an unusually bright LRD ( z spec = 3.1) observed as part of the RUBIES program. This LR...
Lisa J. Esteves, Ernst J. W. de Mooij, Ray Jayawardhana, Chris Watson et al.
Abstract We present the analysis of high-resolution optical spectra of four transits of 55Cnc e, a low-density super-Earth that orbits a nearby Sun-like star in under 18 hr. The inferred bulk density of the planet implies a substantial envelope, which, according to mass–radius relationships, could b...
Tiger Yu-Yang Hsiao, no-firstname Abdurro’uf, Dan Coe, Rebecca L. Larson et al.
Abstract We present JWST/NIRSpec prism spectroscopy of MACS0647−JD, a triply lensed z ∼ 11 candidate discovered in Hubble Space Telescope imaging and spatially resolved by JWST imaging into two components, A and B. Spectroscopy of component A yields a spectroscopic redshift z = 10.17 based on seven ...